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Finding the Fourth Proportional to 99,357.62, 137,119.50 and 56,338.92

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Solution

The fourth proportional to 99,357.62, 137,119.50 and 56,338.92 is: 77,751.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,357.62 : 137,119.50 = 56,338.92 : x
  2. Step 2: Convert to fraction form
    99,357.62/137,119.50 = 56,338.92/x
  3. Step 3: Cross multiply
    99,357.62x = 137,119.50 × 56,338.92
  4. Step 4: Simplify right side
    99,357.62x = 7,725,164,540.94
  5. Step 5: Solve for x
    x = 7,725,164,540.94/99,357.62
  6. Step 6: Final answer
    x = 77,751.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.